CN111116094A - Preparation process of concrete foaming agent - Google Patents
Preparation process of concrete foaming agent Download PDFInfo
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- CN111116094A CN111116094A CN201911387610.0A CN201911387610A CN111116094A CN 111116094 A CN111116094 A CN 111116094A CN 201911387610 A CN201911387610 A CN 201911387610A CN 111116094 A CN111116094 A CN 111116094A
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- foaming agent
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- composite foaming
- tea saponin
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- 239000004088 foaming agent Substances 0.000 title claims abstract description 89
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000004567 concrete Substances 0.000 title abstract description 14
- 239000002131 composite material Substances 0.000 claims abstract description 61
- 239000001397 quillaja saponaria molina bark Substances 0.000 claims abstract description 44
- 229930182490 saponin Natural products 0.000 claims abstract description 44
- 150000007949 saponins Chemical class 0.000 claims abstract description 44
- 238000006243 chemical reaction Methods 0.000 claims abstract description 39
- 239000011381 foam concrete Substances 0.000 claims abstract description 34
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000007864 aqueous solution Substances 0.000 claims abstract description 18
- -1 polydimethylsiloxane Polymers 0.000 claims abstract description 12
- LRWZZZWJMFNZIK-UHFFFAOYSA-N 2-chloro-3-methyloxirane Chemical compound CC1OC1Cl LRWZZZWJMFNZIK-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229940105325 3-dimethylaminopropylamine Drugs 0.000 claims abstract description 9
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000004205 dimethyl polysiloxane Substances 0.000 claims abstract description 9
- IUNMPGNGSSIWFP-UHFFFAOYSA-N dimethylaminopropylamine Chemical compound CN(C)CCCN IUNMPGNGSSIWFP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims abstract description 9
- 229920000151 polyglycol Polymers 0.000 claims abstract description 9
- 239000010695 polyglycol Substances 0.000 claims abstract description 9
- 229920002545 silicone oil Polymers 0.000 claims abstract description 9
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims abstract description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 60
- GJYCVCVHRSWLNY-UHFFFAOYSA-N 2-butylphenol Chemical compound CCCCC1=CC=CC=C1O GJYCVCVHRSWLNY-UHFFFAOYSA-N 0.000 claims description 16
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 9
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 9
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 9
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 claims description 8
- OHLUUHNLEMFGTQ-UHFFFAOYSA-N N-methylacetamide Chemical compound CNC(C)=O OHLUUHNLEMFGTQ-UHFFFAOYSA-N 0.000 claims description 8
- 239000002202 Polyethylene glycol Substances 0.000 claims description 8
- 229920001223 polyethylene glycol Polymers 0.000 claims description 8
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 7
- 229940104256 sodium taurate Drugs 0.000 claims description 7
- 239000000243 solution Substances 0.000 claims description 5
- RISQBVDIYDAUQV-RJXKWAGSSA-M N[C@@H](CCC(=O)O)C(=O)[O-].[Na+].C(CCCCCCCCCCCCCCCCC)(=O)O Chemical compound N[C@@H](CCC(=O)O)C(=O)[O-].[Na+].C(CCCCCCCCCCCCCCCCC)(=O)O RISQBVDIYDAUQV-RJXKWAGSSA-M 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 235000019864 coconut oil Nutrition 0.000 claims description 2
- 239000003240 coconut oil Substances 0.000 claims description 2
- 244000269722 Thea sinensis Species 0.000 claims 4
- 238000004519 manufacturing process Methods 0.000 claims 4
- 241001122767 Theaceae Species 0.000 abstract description 40
- 238000005187 foaming Methods 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 5
- 239000004094 surface-active agent Substances 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 8
- 239000006260 foam Substances 0.000 description 6
- XESUUZCVNAJVNC-ZRVYWVIDSA-L N[C@@H](CCC(=O)[O-])C(=O)[O-].[Na+].C(CCCCCCCCCCCCCCCCC)(=O)O.[Na+] Chemical compound N[C@@H](CCC(=O)[O-])C(=O)[O-].[Na+].C(CCCCCCCCCCCCCCCCC)(=O)O.[Na+] XESUUZCVNAJVNC-ZRVYWVIDSA-L 0.000 description 5
- GWLWWNLFFNJPDP-UHFFFAOYSA-M sodium;2-aminoethanesulfonate Chemical compound [Na+].NCCS([O-])(=O)=O GWLWWNLFFNJPDP-UHFFFAOYSA-M 0.000 description 5
- 229920000609 methyl cellulose Polymers 0.000 description 4
- 239000001923 methylcellulose Substances 0.000 description 4
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical class O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229940048109 sodium methyl cocoyl taurate Drugs 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- LNAZSHAWQACDHT-XIYTZBAFSA-N (2r,3r,4s,5r,6s)-4,5-dimethoxy-2-(methoxymethyl)-3-[(2s,3r,4s,5r,6r)-3,4,5-trimethoxy-6-(methoxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6r)-4,5,6-trimethoxy-2-(methoxymethyl)oxan-3-yl]oxyoxane Chemical compound CO[C@@H]1[C@@H](OC)[C@H](OC)[C@@H](COC)O[C@H]1O[C@H]1[C@H](OC)[C@@H](OC)[C@H](O[C@H]2[C@@H]([C@@H](OC)[C@H](OC)O[C@@H]2COC)OC)O[C@@H]1COC LNAZSHAWQACDHT-XIYTZBAFSA-N 0.000 description 1
- 239000004604 Blowing Agent Substances 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 108010064851 Plant Proteins Proteins 0.000 description 1
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 235000021120 animal protein Nutrition 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 235000021118 plant-derived protein Nutrition 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
The invention discloses a preparation process of a foam concrete composite foaming agent, belonging to the field of concrete materials and comprising the following steps: step 1, preparing modified tea saponin: putting tea saponin, epoxy chloropropane, polyglycol ether, silicone oil, 3-dimethylamino propylamine, polydimethylsiloxane, methyl methacrylate, triethylene glycol and glycerol into a reactor by weight, adding an aqueous solution of alkali metal hydroxide, uniformly mixing, and heating for reaction to prepare modified tea saponin; step 2, preparing a composite foaming agent A liquid; and step 3, preparing the composite foaming agent. According to the invention, the tea saponin is modified, and the composite foaming liquid is added simultaneously, so that the activity of the surface active substance of the foaming agent is improved. Therefore, the finally prepared concrete composite foaming agent has excellent foaming performance, the foaming times and the defoaming rate are obviously improved, and more foam concrete can be prepared by the unit mass of the foaming agent, so that the concrete composite foaming agent is a very excellent foam concrete foaming agent.
Description
Technical Field
The invention discloses a preparation process of a foam concrete composite foaming agent, belongs to the technical field of concrete materials, and particularly relates to a preparation process of foam concrete.
Background
The foam concrete is a light concrete material obtained by uniformly mixing foam and cement paste, the foam concrete foaming agent is a substance which can enable an aqueous solution of the foam concrete foaming agent to generate a large amount of foam under the condition of introducing air by a mechanical action force, and the foam generated by the foam concrete foaming agent is uniformly mixed with cement to obtain the light concrete material.
By foamed concrete foaming agent is generally understood a surfactant, which may be divided into anionic surfactants, cationic surfactants, nonionic surfactants, etc., or a surface active substance, which includes animal protein, plant protein, pulp waste liquor, etc. The foam concrete foaming agent is also called a cement foaming agent, and the foam concrete foaming agent is an additive which can reduce the surface tension of liquid, generate a large amount of uniform and stable foam and is used for producing foam concrete.
At present, along with the more and more extensive application of foam concrete, a plurality of factors influencing the performance of the foam concrete are also more and more paid attention by people. The problems of low strength, high water absorption and the like of the foam concrete generally exist, and the improvement of the performance of the foam concrete is still insufficient, wherein the foaming mechanism is improved, so that the foaming is more effective, the size of air holes is more controllable, and the distribution is more uniform, which becomes one of the key points of the development of the foaming agent.
The patent document CN 105293985A discloses a concrete foaming agent which is prepared from the following components of sodium dodecyl sulfate, triethanolamine, methylcellulose, α -olefin sodium sulfonate, polyacrylamide, malonic acid, modified bentonite and water, wherein the foaming agent can enable foams to be more uniform and fine by modifying the bentonite, so that the prepared foam concrete has higher strength and good heat insulation performance, the former ensures the foaming times of the foaming agent and the latter can greatly improve the foam stability by doping the methylcellulose and the triethanolamine, the foaming agent can achieve a very ideal effect by mixing and modifying the methylcellulose and the triethanolamine, and the foaming agent plays a role in improving the stability of foaming agent mother liquor foaming.
Therefore, the concrete foaming agent is characterized in that the conventional surfactant, methylcellulose and modified bentonite are used as the basis of the foaming agent, the stability of the foaming agent is good, but the actual foaming uniformity and foaming controllability are poor, and the actual effect is not ideal.
Disclosure of Invention
The invention aims to overcome the defect of insufficient foaming performance of the existing concrete foaming agent, and mainly aims to prepare the foam concrete composite foaming agent by modifying tea saponin.
The technical scheme is as follows:
a preparation process of a foam concrete composite foaming agent comprises the following steps:
step 1, preparing modified tea saponin: according to the weight, 1.5-2.5 parts of tea saponin, 0.3-0.8 part of epoxy chloropropane, 0.1-0.3 part of polyglycol ether, 0.1-0.3 part of silicone oil, 3.0-5.0 parts of 3-dimethylamino propylamine, 0.5-1.2 parts of polydimethylsiloxane, 0.2-0.5 part of methyl methacrylate, 2.0-3.5 parts of triethylene glycol and 1.5-2.5 parts of glycerol are taken and put into a reactor, 10-18 parts of aqueous solution of alkali metal hydroxide are added and mixed uniformly, the heating reaction is carried out for 10 hours, and the modified tea saponin is prepared after the reaction is finished;
step 2, preparing a composite foaming agent A liquid: according to parts by weight, 0.5-1.5 parts of octylphenol, 0.5-1.5 parts of butylphenol, 0.2-0.7 parts of N-methylacetamide, 2.0-4.5 parts of ethylene oxide, 0.5-1.2 parts of polyethylene glycol and 7-12 parts of sodium hydroxide aqueous solution are uniformly mixed, and are heated to react for 2-6 hours, so that a composite foaming agent A solution is prepared after the reaction is finished;
step 3, preparing a composite foaming agent: according to parts by weight, mixing modified tea saponin, a composite foaming agent A liquid, 1.2-2.2 parts of sodium stearate glutamate, 0.3-0.6 part of methyl coconut oil acyl sodium taurate, 0.1-0.2 part of superfine aluminum silicate and 1.1-2.5 parts of sodium dodecyl benzene sulfonate, and uniformly stirring.
Preferably, in the step 1, the alkali metal hydroxide is sodium hydroxide, and the concentration of the sodium hydroxide is 1.2 to 3.2 mol/L.
Preferably, in the step 1, the heating reaction temperature is 135-145 ℃.
Preferably, in the step 2, the concentration of the sodium hydroxide substance is 2.2-4.2 mol/L.
Preferably, in the step 2, the heating reaction temperature is 75-85 ℃.
Advantageous effects
According to the invention, the tea saponin is modified, and the composite foaming liquid is added simultaneously, so that the activity of the surface active substance of the foaming agent is improved. Therefore, the finally prepared concrete composite foaming agent has excellent foaming performance, the foaming times and the defoaming rate are obviously improved, and more foam concrete can be prepared by the unit mass of the foaming agent, so that the concrete composite foaming agent is a very excellent foam concrete foaming agent.
Detailed Description
For a further understanding of the invention, reference will now be made to the preferred embodiments of the invention by way of example, and it is to be understood that the description is intended to further illustrate features and advantages of the invention, and not to limit the scope of the claims.
Example 1
A preparation process of a foam concrete composite foaming agent comprises the following steps:
step 1, preparing modified tea saponin: according to the weight, 1.5 parts of tea saponin, 0.3 part of epoxy chloropropane, 0.1 part of polyglycol ether, 0.1 part of silicone oil, 3-dimethylamino propylamine 3.0 part, 0.5 part of polydimethylsiloxane, 0.2 part of methyl methacrylate, 2.0 parts of triethylene glycol and 1.5 parts of glycerol are taken and put into a reactor, 10 parts of sodium hydroxide aqueous solution with the mass concentration of 1.2 mol/is added and evenly mixed, the heating reaction is carried out for 10 hours, the heating reaction temperature is 135 ℃, the reaction is finished, and the modified tea saponin is prepared;
step 2, preparing a composite foaming agent A liquid: according to parts by weight, 0.5 part of octylphenol, 0.5 part of butylphenol, 0.2 part of N-methylacetamide, 2.0 parts of ethylene oxide, 0.5 part of polyethylene glycol and 7 parts of sodium hydroxide aqueous solution with the mass concentration of 2.2mol/L are taken and evenly mixed, and the mixture is heated and reacted for 2 hours at the temperature of 75 ℃ to prepare the composite foaming agent A liquid;
step 3, preparing a composite foaming agent: according to the weight portion, the modified tea saponin, the composite foaming agent A liquid, 1.2 portions of stearic acid sodium glutamate, 0.3 portion of methyl cocoyl sodium taurate, 0.1 portion of superfine aluminum silicate and 1.1 portion of sodium dodecyl benzene sulfonate are mixed and stirred evenly.
Example 2
A preparation process of a foam concrete composite foaming agent comprises the following steps:
step 1, preparing modified tea saponin: according to the weight, 2.5 parts of tea saponin, 0.8 part of epoxy chloropropane, 0.3 part of polyglycol ether, 0.3 part of silicone oil, 5.0 parts of 3-dimethylamino propylamine, 1.2 parts of polydimethylsiloxane, 0.5 part of methyl methacrylate, 3.5 parts of triethylene glycol and 2.5 parts of glycerol are taken and put into a reactor, 118 parts of sodium hydroxide aqueous solution with the mass concentration of 3.2 mol/is added and uniformly mixed, the heating reaction is carried out for 10 hours, the heating reaction temperature is 145 ℃, the reaction is finished, and the modified tea saponin is prepared;
step 2, preparing a composite foaming agent A liquid: according to parts by weight, 1.5 parts of octylphenol, 1.5 parts of butylphenol, 0.7 part of N-methylacetamide, 4.5 parts of ethylene oxide, 1.2 parts of polyethylene glycol and 12 parts of sodium hydroxide aqueous solution with the mass concentration of 4.2mol/L are uniformly mixed, and are heated and reacted for 6 hours at the temperature of 85 ℃, and the reaction is finished to prepare a composite foaming agent A solution;
step 3, preparing a composite foaming agent: according to the weight parts, the modified tea saponin, the composite foaming agent A liquid, 2.2 parts of stearic acid sodium glutamate, 0.6 part of methyl cocoyl sodium taurate, 0.2 part of superfine aluminum silicate and 2.5 parts of sodium dodecyl benzene sulfonate are mixed and stirred uniformly.
Example 3
A preparation process of a foam concrete composite foaming agent comprises the following steps:
step 1, preparing modified tea saponin: according to the weight, 1.75 parts of tea saponin, 0.4 part of epoxy chloropropane, 0.15 part of polyglycol ether, 0.15 part of silicone oil, 3-dimethylaminopropylamine, 0.7 part of polydimethylsiloxane, 0.3 part of methyl methacrylate, 2.5 parts of triethylene glycol and 1.75 parts of glycerol are taken and put into a reactor, 12 parts of sodium hydroxide aqueous solution with the mass concentration of 1.5 mol/is added and mixed uniformly, the heating reaction is carried out for 10 hours, the heating reaction temperature is 137 ℃, the reaction is finished, and the modified tea saponin is prepared;
step 2, preparing a composite foaming agent A liquid: according to parts by weight, taking 0.7 part of octylphenol, 0.7 part of butylphenol, 0.3 part of N-methylacetamide, 2.6 parts of ethylene oxide, 0.7 part of polyethylene glycol and 8 parts of sodium hydroxide aqueous solution with the mass concentration of 2.6mol/L, uniformly mixing, heating for reaction for 3 hours at the temperature of 77 ℃, and preparing a composite foaming agent A solution after the reaction is finished;
step 3, preparing a composite foaming agent: according to the weight parts, the modified tea saponin, the composite foaming agent A liquid, 1.4 parts of stearic acid sodium glutamate, 0.4 part of methyl cocoyl sodium taurate, 0.1 part of superfine aluminum silicate and 1.4 parts of sodium dodecyl benzene sulfonate are mixed and stirred uniformly.
Example 4
A preparation process of a foam concrete composite foaming agent comprises the following steps:
step 1, preparing modified tea saponin: according to the weight, 2.25 parts of tea saponin, 0.7 part of epoxy chloropropane, 0.25 part of polyglycol ether, 0.25 part of silicone oil, 4.5 parts of 3-dimethylamino propylamine, 1.0 part of polydimethylsiloxane, 0.4 part of methyl methacrylate, 3.0 part of triethylene glycol and 2.25 parts of glycerol are taken and put into a reactor, 16 parts of sodium hydroxide aqueous solution with the mass concentration of 2.7 mol/is added and uniformly mixed, the heating reaction is carried out for 10 hours, the heating reaction temperature is 143 ℃, and the modified tea saponin is prepared after the reaction is finished;
step 2, preparing a composite foaming agent A liquid: according to parts by weight, 1.3 parts of octylphenol, 1.3 parts of butylphenol, 0.6 part of N-methylacetamide, 3.8 parts of ethylene oxide, 0.9 part of polyethylene glycol and 11 parts of sodium hydroxide aqueous solution with the mass concentration of 3.8mol/L are uniformly mixed, and are heated and reacted for 5 hours at the temperature of 83 ℃ to prepare a composite foaming agent A solution after the reaction is finished;
step 3, preparing a composite foaming agent: according to the weight parts, the modified tea saponin, the composite foaming agent A liquid, 2.0 parts of stearic acid sodium glutamate, 0.5 part of methyl cocoyl sodium taurate, 0.2 part of superfine aluminum silicate and 2.2 parts of sodium dodecyl benzene sulfonate are mixed and stirred uniformly.
Example 5
A preparation process of a foam concrete composite foaming agent comprises the following steps:
step 1, preparing modified tea saponin: according to the weight, 2.0 parts of tea saponin, 0.55 part of epoxy chloropropane, 0.2 part of polyglycol ether, 0.2 part of silicone oil, 4.0 parts of 3-dimethylamino propylamine, 0.85 part of polydimethylsiloxane, 0.35 part of methyl methacrylate, 2.75 parts of triethylene glycol and 2.0 parts of glycerol are taken and put into a reactor, 14 parts of sodium hydroxide aqueous solution with the mass concentration of 2.2 mol/is added and uniformly mixed, the heating reaction is carried out for 10 hours, the heating reaction temperature is 140 ℃, the reaction is finished, and the modified tea saponin is prepared;
step 2, preparing a composite foaming agent A liquid: according to parts by weight, 1.0 part of octylphenol, 1.0 part of butylphenol, 0.45 part of N-methylacetamide, 3.25 parts of ethylene oxide, 0.85 part of polyethylene glycol and 9.5 parts of sodium hydroxide aqueous solution with the mass concentration of 3.2mol/L are taken and evenly mixed, the heating reaction is carried out for 4 hours, the temperature of the heating reaction is 80 ℃, the reaction is finished, and the composite foaming agent A liquid is prepared;
step 3, preparing a composite foaming agent: according to the weight portion, the modified tea saponin, the composite foaming agent A liquid, 1.7 portions of stearic acid sodium glutamate, 0.45 portion of methyl cocoyl sodium taurate, 0.15 portion of superfine aluminum silicate and 1.8 portions of sodium dodecyl benzene sulfonate are mixed and stirred evenly.
Comparative example 1
The difference from example 5 is that: the tea saponin is not modified, and the tea saponin is directly added.
A preparation process of a foam concrete composite foaming agent comprises the following steps:
step 1, preparing a composite foaming agent A liquid: according to parts by weight, 1.0 part of octylphenol, 1.0 part of butylphenol, 0.45 part of N-methylacetamide, 3.25 parts of ethylene oxide, 0.85 part of polyethylene glycol and 9.5 parts of sodium hydroxide aqueous solution with the mass concentration of 3.2mol/L are taken and evenly mixed, the heating reaction is carried out for 4 hours, the temperature of the heating reaction is 80 ℃, the reaction is finished, and the composite foaming agent A liquid is prepared;
step 2, preparing a composite foaming agent: according to the weight portion, 2.0 portions of tea saponin, liquid A of composite foaming agent, 1.7 portions of sodium glutamate stearate, 0.45 portion of sodium methyl cocoyl taurate, 0.15 portion of superfine aluminum silicate and 1.8 portions of sodium dodecyl benzene sulfonate are mixed and stirred evenly.
Comparative example 2
The difference from example 5 is that: the composite foaming agent A liquid is not added.
A preparation process of a foam concrete composite foaming agent comprises the following steps:
step 1, preparing modified tea saponin: according to the weight, 2.0 parts of tea saponin, 0.55 part of epoxy chloropropane, 0.2 part of polyglycol ether, 0.2 part of silicone oil, 4.0 parts of 3-dimethylamino propylamine, 0.85 part of polydimethylsiloxane, 0.35 part of methyl methacrylate, 2.75 parts of triethylene glycol and 2.0 parts of glycerol are taken and put into a reactor, 14 parts of sodium hydroxide aqueous solution with the mass concentration of 2.2 mol/is added and uniformly mixed, the heating reaction is carried out for 10 hours, the heating reaction temperature is 140 ℃, the reaction is finished, and the modified tea saponin is prepared;
step 3, preparing a composite foaming agent: the modified tea saponin is prepared by mixing 1.7 parts by weight of modified tea saponin, 1.7 parts by weight of sodium glutamate stearate, 0.45 part by weight of sodium methyl cocoyl taurate, 0.15 part by weight of superfine aluminum silicate and 1.8 parts by weight of sodium dodecyl benzene sulfonate and uniformly stirring.
The concrete foaming agents prepared in the above examples and comparative examples were subjected to performance tests to measure the performance of the foaming agents, and the results are shown in table 1:
TABLE 1 blowing agent Performance test of examples and comparative examples
As can be seen from the above table, examples 1 to 5 are significantly better than comparative example 1 and comparative example 2 in terms of foaming index and defoaming rate, wherein comparative example 1 does not modify tea saponin, the foaming times are significantly increased after modification, and the defoaming rate is also significantly reduced; the comparative example 2 is a preparation of the composite foaming liquid a, and the performance is reduced to some extent without adding the composite foaming liquid a, so that it is known that the performance of the foaming agent is significantly increased after the tea saponin is modified and the composite foaming liquid a is added.
Claims (5)
1. A preparation process of a foam concrete composite foaming agent is characterized by comprising the following steps:
step 1, preparing modified tea saponin: according to the weight, 1.5-2.5 parts of tea saponin, 0.3-0.8 part of epoxy chloropropane, 0.1-0.3 part of polyglycol ether, 0.1-0.3 part of silicone oil, 3.0-5.0 parts of 3-dimethylamino propylamine, 0.5-1.2 parts of polydimethylsiloxane, 0.2-0.5 part of methyl methacrylate, 2.0-3.5 parts of triethylene glycol and 1.5-2.5 parts of glycerol are taken and put into a reactor, 10-18 parts of aqueous solution of alkali metal hydroxide are added and mixed uniformly, the heating reaction is carried out for 10 hours, and the modified tea saponin is prepared after the reaction is finished;
step 2, preparing a composite foaming agent A liquid: according to parts by weight, 0.5-1.5 parts of octylphenol, 0.5-1.5 parts of butylphenol, 0.2-0.7 parts of N-methylacetamide, 2.0-4.5 parts of ethylene oxide, 0.5-1.2 parts of polyethylene glycol and 7-12 parts of sodium hydroxide aqueous solution are uniformly mixed, and are heated to react for 2-6 hours, so that a composite foaming agent A solution is prepared after the reaction is finished;
step 3, preparing a composite foaming agent: according to parts by weight, mixing modified tea saponin, a composite foaming agent A liquid, 1.2-2.2 parts of sodium stearate glutamate, 0.3-0.6 part of methyl coconut oil acyl sodium taurate, 0.1-0.2 part of superfine aluminum silicate and 1.1-2.5 parts of sodium dodecyl benzene sulfonate, and uniformly stirring.
2. The process for preparing the foam concrete composite foaming agent according to claim 1, wherein the foaming agent comprises the following components in percentage by weight: in the step 1, the alkali metal hydroxide is sodium hydroxide, and the mass concentration of the sodium hydroxide is 1.2-3.2 mol/L.
3. The process for preparing the foam concrete composite foaming agent according to claim 1, wherein the foaming agent comprises the following components in percentage by weight: in the step 1, the heating reaction temperature is 135-145 ℃.
4. The process for preparing the foam concrete composite foaming agent according to claim 1, wherein the foaming agent comprises the following components in percentage by weight: in the step 2, the concentration of the sodium hydroxide substance is 2.2-4.2 mol/L.
5. The process for preparing the foam concrete composite foaming agent according to claim 1, wherein the foaming agent comprises the following components in percentage by weight: in the step 2, the heating reaction temperature is 75-85 ℃.
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Cited By (1)
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| CN115504714A (en) * | 2022-09-20 | 2022-12-23 | 福州大学 | Saponin-based porous foam concrete for preventing and controlling red tide |
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